public class E4 {
	public static void main(String args[]) {
		int i,j;
	for(i=2;i<=100;i++) {
		for(j=2;j<=i/2;j++) {
			if(i%j==0)
				break;
		}
	if(j>i/2) {
		System.out.println(" "+i);
	}
	}
	}
}



